ZSU
ZSU
The ZSU-23-4 began development in the 1950's. The design was to include an amphibious tank with a new turret with four 23mm water cooled cannons. The 23-4 was accepted for service in 1962 and was regularly seen in Moscow parades from 1965 onwards. It had a relatively long life as production ceased in 1983.
ZSU is the Soviet designation for the system, (Zenitnaia Samokhodnaia Ustinovka), however it is more commonly known in NATO as the Shilka. The "23" refers to the calibre of the weapon, and the "4" refers to the number of cannons on the system.
The range of the Gun Dish radar system can be between 18-20 km depending on type of target and atmospheric conditions. There are optical sights fitted to the ZSU to help the operators remain in action even in event of the radar being jammed, or if the radar system is forced to be shut down due to the threat of anti-radiation missiles.
The four 23mm cannons are gas operated and fire approximately 1000 rounds per barrel per minute. Each ZSU carries around 2000 rounds, however, supply trucks can carry around 3000 rounds. The Shilkas cannon can engage using only one of the four cannons if required and will normally fire in bursts of 5, 10 or 50 rounds per barrel. The barrels are water-cooled and have flash hiders to eliminate detection at night.
Further information on the equipment maintained at RAF Spadeadam can be found in the links below.
Scud Missile